Approximately ten per cent of homes in the Irish countryside still use underground septic tanks to deal with their household sewage. The biggest drawback to the tanks is that they have to be emptied two or three times each year. It is also important to site the tanks carefully to ensure that the contents cannot leak into the ground water supply. As a solution for storing human feces and urine, the Irish Earthworm Company has developed a household wormery for composting domestic waste.
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